Actuator

ABSTRACT

An actuator may include a supporting body; a movable body shiftable relative to the supporting body; a first magnetic drive circuit comprising a first coil and a first magnet; a second magnetic drive circuit comprising a second coil and a second magnet adjacent to each other; a first coil holder supporting the first coil; and a second coil holder holding the second coil and aligned with the first coil holder in the first direction. The first coil holder and the second coil holder each may include a plurality of bottomed holes having openings in regions where the first coil holder and the second coil holder are disposed adjacent to each other. The first coil holder and the second coil holder may be positioned with pins fit to the holes.

CROSS REFERENCE TO RELATED APPLICATION

The present application claims priority under 35 U.S.C. § 119 toJapanese Application No. 2018-015243 filed Jan. 31, 2018, the entirecontent of which is incorporated herein by reference.

BACKGROUND

At least an embodiment of the present invention relates to an actuatorthat generates various types of vibration.

There has been proposed an actuator, which is a device that generatesvibration by magnetic drive circuits, includes a supporting bodyincluding magnets, a movable body including coils opposing therespective magnets, and elastic members disposed between the movablebody and the supporting body (refer to Japanese Unexamined PatentApplication Publication No. 2016-127789). In the actuator according toJapanese Unexamined Patent Application Publication No. 2016-127789, aholder having a plate thickness in a first direction holds two firstcoils disposed apart from each other in a second direction orthogonal tothe first direction and two second coils disposed apart from each otherin a third direction orthogonal to the first and second directions. Thesupporting body is provided with first magnets disposed adjacent to thefirst coil on the two sides in the first direction and second magnetsdisposed adjacent to the second coil on the two sides in the firstdirection. Thus, the first coils and the first magnets constitute afirst magnetic drive circuit that vibrates the movable body in thesecond direction, and the second coils and the second magnets constitutea second magnetic drive circuit that vibrates the movable body in thethird direction. Consequently, the actuator generates vibrations in thesecond and the third directions.

In the movable body of the actuator according to Japanese UnexaminedPatent Application Publication No. 2016-127789, the first coils and thesecond coils are disposed on a same plane in the holder having athickness direction in the first direction. This causes the movable bodyto have a large plane area. As a result, the actuator unfortunately hasan increased plane area. A first coil holder holding a first coil and asecond coil holder holding a second coil can be disposed in alignmentwith each other to reduce the plane area of the actuator. However, thestrength of the connection between the first coil holder and the secondcoil holder is insufficient against shock applied in a directionorthogonal to the first direction.

SUMMARY

At least an embodiment of the present invention provides an actuatorthat can increase the strength of the connection between the first coilholder and the second coil holder when the first coil holder holding thefirst coil is disposed in alignment with the second coil holder holdingthe second coil.

To solve the above-described problems, an actuator according to at leastan embodiment of the present invention includes a supporting body; amovable body shiftable relative to the supporting body; a first magneticdrive circuit comprising a first coil and a first magnet adjacent toeach other in a first direction and driving the movable body in a seconddirection orthogonal to the first direction; a second magnetic drivecircuit comprising a second coil and a second magnet adjacent to eachother in the first direction and driving the movable body in a thirddirection orthogonal to the first direction and intersecting the seconddirection, the second coil and the second magnet being aligned with thefirst magnetic drive circuit in the first direction; a first coil holdersupporting the first coil; and a second coil holder holding the secondcoil and aligned with the first coil holder in the first direction,wherein, the first coil holder and the second coil holder each has aplurality of bottomed holes having openings in regions where the firstcoil holder and the second coil holder are disposed adjacent to eachother in the first direction, the first coil holder and the second coilholder are positioned with pins fit to the holes.

According to at least an embodiment of the present invention, since thefirst coil holder holding the first coil is disposed in alignment withthe second coil holder holding the second coil, the plane area of theactuator can be reduced. Since pins are disposed in the holes in thefirst coil holder and the holes in the second coil holder, the strengthof the connection between the first coil holder and the second coilholder can be enhanced to alleviate shock applied in a directionorthogonal to the first direction.

According to at least an embodiment of the present invention, the firstcoil holder may include a plurality of first columns protruding towardthe second coil holder, the second coil holder may include a pluralityof second columns protruding toward the respective first columns suchthat end faces of the second columns come into contact with end surfacesof the respective first columns, and among the first columns and thesecond columns, the holes may be formed in at least two of the firstcolumns and at least of two the second columns in contact with eachother. According to this aspect, the first coil and the second coil canbe disposed along the first direction at an appropriate pitch. Since theholes fit on the pins are formed in the first columns of the first coilholder and the second columns of the second coil holder, the holes canhave a large depth. Thus, the first coil holder and the second coilholder can have a connection with large strength.

According to at least an embodiment of the present invention, the firstcoil holder may include a first frame holding the first coil inside thefirst frame, the second coil holder may include a second frame holdingthe second coil inside the second frame, the first columns may bedisposed at edge portions of the first frame, and the second columns maybe disposed at edge portions of the second frame.

According to at least an embodiment of the present invention, the firstframe and the second frame each may have a quadrangular shape, theplurality of first columns may include four first columns disposed atthe four corners of the first frame, and the plurality of second columnsmay include four second columns disposed at the four corners of thesecond frame.

According to at least an embodiment of the present invention, the pinsmay include metal. According to this aspect, the first coil holder andthe second coil holder can have a connection with large strength.

According to at least an embodiment of the present invention, the firstmagnet may be disposed adjacent to a first effective side portion in thefirst direction, the first effective side portion being disposed on thefirst coil and extending in the third direction, the second magnet maybe disposed adjacent to a second effective side portion in the firstdirection, the second effective side portion being disposed on thesecond coil and extending in the second direction, the first coil holdermay include a first stopper disposed adjacent to the first magnet in thethird direction and defining a first movable range of the movable bodyin the third direction, and the second coil holder may include a secondstopper disposed adjacent to the second magnet in the second directionand defining a second movable range of the movable body in the seconddirection.

According to at least an embodiment of the present invention, the firstcoil and the second coil may be disposed on the supporting body, and thefirst magnet, the second magnet, the first yoke, the second yoke, andthe third yoke may be disposed on the movable body. According to thisaspect, the movable body requires no wiring, unlike a movable bodyprovided with a coil.

According to at least an embodiment of the present invention, a firstelastic member having elasticity or viscoelasticity may be disposed incontact with both the movable body and the supporting body, the firstelastic member being disposed between the movable body and a portion ofthe supporting body adjacent to a side of the first coil on the movablebody, the side of the first coil being remote from the second coil, anda second elastic member having elasticity or viscoelasticity may bedisposed in contact with both the movable body and the supporting body,the second elastic member being disposed between the movable body and aportion of the supporting body adjacent to a side of the second coil onthe movable body, the side of the second coil being remote from thefirst coil. According to this aspect, the viscoelastic member deforms ina shearing direction orthogonal to the stretchable direction, when themovable body vibrates in the second and third directions relative to thesupporting body. Thus, the viscoelastic member can achieve vibrationcharacteristics having satisfactory linearity because they deform withhigh linearity.

According to at least an embodiment of the present invention, since thefirst coil holder holding the first coil is disposed in alignment withthe second coil holder holding the second coil, the plane area of theactuator can be reduced. Since pins are disposed in the holes in thefirst coil holder and the holes in the second coil holder, the strengthof the connection between the first coil holder and the second coilholder can be enhanced to alleviate shock applied in a directionorthogonal to the first direction.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments will now be described, by way of example only, withreference to the accompanying drawings which are meant to be exemplary,not limiting, and wherein like elements are numbered alike in severalFigures, in which:

FIG. 1 is a perspective view of an actuator according to at least anembodiment of the present invention;

FIG. 2 is a cross-sectional view of the actuator taken along first andsecond directions in FIG. 1;

FIG. 3 is a cross-sectional view of the actuator taken along first andthird directions in FIG. 1;

FIG. 4 is an exploded perspective view of the actuator in FIG. 1 withfirst and second sheetlike parts of the restraining member in FIG. 1 ina detached state;

FIG. 5 is an exploded perspective view of drive circuits of the actuatorin FIG. 1 viewed from a second side in the first direction;

FIG. 6 is an exploded perspective view of the drive circuits of theactuator in FIG. 1 viewed from a first side in the first direction;

FIG. 7 is an exploded perspective view of the first magnetic drivecircuit illustrated in FIG. 2 and FIG. 3;

FIG. 8 is an exploded perspective view of the second magnetic drivecircuit illustrated in FIG. 2 and FIG. 3;

FIG. 9 illustrates a jig used in production of an actuator according toat least an embodiment of the present invention;

FIG. 10 illustrates the first sheetlike part of the restraining memberpositioned on the jig in FIG. 9; and

FIG. 11 illustrates a first yoke positioned on the first sheetlike partwith the jig in FIG. 9.

DETAILED DESCRIPTION

At least an embodiment of the present invention will now be describedwith reference to the accompanying drawings. In the description below,the three directions intersecting each other are referred to as a seconddirection X, a third direction Y, and a first direction Z. The firstdirection Z is orthogonal to the second direction X and the thirddirection Y. In the following description, X1 is allotted to a firstside in the second direction X, and X2 is allotted to a second side inthe second direction X; Y1 is allotted to a first side in the thirddirection Y, and Y2 is allotted to a second side in the third directionY; and Z1 is allotted to a first side in the first direction Z, and Z2is allotted to a second side in the first direction Z.

(Overall Configuration)

FIG. 1 is a perspective view of an actuator 1 according to at least anembodiment of the present invention. FIG. 2 is a cross-sectional view ofthe actuator 1 in FIG. 1 taken along the first direction Z and thesecond direction X. FIG. 3 is a cross-sectional view of the actuator 1taken along the first direction Z and the third direction Y in FIG. 1.FIG. 4 is an exploded perspective view of the actuator 1 with a firstsheetlike part 28 and a second sheetlike part 29 of a restraining member27 illustrated in FIG. 1 in a detached state.

With reference to FIG. 1, the actuator 1 according to this embodimenthas a substantially cuboidal shape and receives electrical power from anexternal unit through a flexible wiring board 9. With reference to FIG.1, FIG. 2, FIG. 3, and FIG. 4, the actuator 1 includes a supporting body2, a movable body 3, and elastic members 4 (first elastic member 41 andsecond elastic member 42) disposed between the supporting body 2 and themovable body 3. The movable body 3 is supported by the supporting body 2via the elastic member 4 such that the movable body 3 is shiftable inthe first direction Z, the second direction X, and the third directionY. The actuator 1 includes drive circuits that cause the movable body 3to vibrate relative to the supporting body 2. In this embodiment, thedrive circuits are a first magnetic drive circuit 6 that causes themovable body 3 to vibrate in the second direction X relative to thesupporting body 2 and a second magnetic drive circuit 7 that causes themovable body 3 to vibrate in the third direction Y relative to thesupporting body 2. Since the movable body 3 can vibrate in the seconddirection X and the third direction Y, the vibration that can be sensedby the user touching the actuator 1 is vibration in the second directionX, vibration in the third direction Y, and a combination of vibration inthe second direction X and vibration in the third direction Y.

The supporting body 2 includes multiple components aligned along thefirst direction Z and the restraining member 27 restraining thecomponents on the two sides in the first direction Z. A first elasticmember 41 (elastic member 4) having elasticity or viscoelasticity isdisposed between the restraining member 27 and the movable body on thefirst side Z1 in the first direction Z. The first elastic member 41 isin contact with the restraining member 27 and the movable body 3. Asecond elastic member 42 (elastic member 4) having elasticity orviscoelasticity is disposed between the restraining member 27 and themovable body 3 on the second side Z2 in the first direction Z. Thesecond elastic member 42 is in contact with the restraining member 27and the movable body 3. Both of the elastic members 4 (the first elasticmember 41 and the second elastic member 42) are compressed in the firstdirection Z.

The elastic members 4 according to this embodiment are viscoelasticbodies, in particular are gel plates. The faces of the first elasticmember 41 in the first direction Z may be connected to the movable body3 and the restraining member 27 through adhesion. The faces of thesecond elastic member 42 in the first direction Z may be connected tothe movable body 3 and the restraining member 27 through adhesion.

A gelatinous damper has linear or non-linear shrinkage depending on thedirection of shrinking. For example, when a platelike gelatinous damperis pressed in the thickness direction (axial direction) andcompressively deformed, the non-linear component of the shrinkage islarger than the linear component of the shrinkage, whereas when thedamper is pulled in the thickness direction (axial direction) andstretches, the linear component of the shrinkage is larger than thenon-linear component of the shrinkage. When the damper deforms in ashearing direction intersecting the thickness direction (axialdirection), the linear component of the deformation is larger than thenon-linear component of the deformation. In this embodiment, when themovable body 3 vibrates in the second direction X and the thirddirection Y, the elastic members 4 (viscoelastic bodies) deform alongthe shearing direction. Thus, the elastic members 4 can achievevibration characteristics having satisfactory linearity because theelastic members 4 deform with high linearity.

The magnetic drive circuits (first magnetic drive circuit 6 and secondmagnetic drive circuit 7) each includes a coil and magnets disposedadjacent to the coil in the first direction Z. The coil is disposed onone of the supporting bodies 2 and the movable body 3, and the magnetsare disposed on the other one of the supporting bodies 2 and the movablebody 3. As described below in this embodiment, coils (first coil 61 andsecond coil 71) and coil holders (first coil holder 65 and second coilholder 75) are disposed on the supporting body 2. Magnets (first magnets621 and 622 and second magnets 721 and 722) and yokes (first yoke 64,second yoke 74, and third yoke 84) are disposed on the movable body 3.

The first magnetic drive circuit 6 is aligned with the second magneticdrive circuit 7 along the first direction Z such that the first magneticdrive circuit 6 is adjacent to the first side Z1 of the second magneticdrive circuit 7. Thus, the actuator 1 has small dimensions (plane area)in view along the first direction Z. Thus, the actuator 1 according tothis embodiment can be suitably installed in a device such as ahand-held controller.

(Schematic Configurations of First Magnetic Drive Circuit 6 and SecondMagnetic Drive Circuit 7)

As illustrated in FIG. 2 and FIG. 3, the first magnetic drive circuit 6and the second magnetic drive circuit 7 have the same basicconfiguration in which the two magnetic drive circuits are symmetricabout the first direction Z and rotated by 90 degrees relative to eachother around a central axis extending along the first direction Z. Indetail, the first magnetic drive circuit 6 includes the first coil 61,the first magnet 621 disposed such that the first side Z1 thereof isadjacent to the first coil 61 in the first direction Z, and the firstmagnet 622 disposed such that the second side Z2 thereof is adjacent tothe first coil 61 in the first direction Z. In contrast, the secondmagnetic drive circuit 7 includes the second coil 71, the second magnet721 disposed such that the first side Z1 thereof is adjacent to thesecond coil 71 in the first direction Z, and the second magnet 722disposed such that the second side Z2 thereof is adjacent to the secondcoil 71 in the first direction Z. The second magnetic drive circuit 7(the second coil 71 and the second magnets 721 and 722) is disposed onthe second side Z2 of the first magnetic drive circuit 6 and alignedwith the first magnetic drive circuit 6 in the first direction Z.

The supporting body 2 is provided with a first coil holder 65 holdingthe first coil 61 and a second coil holder 75 holding the second coil71, to align the first magnetic drive circuit 6 and the second magneticdrive circuit 7, having the configurations described above, in the firstdirection Z. The first coil holder 65 and the second coil holder 75 arealigned in the first direction Z in this order from the first side Z1 tothe second side Z2 in the first direction Z. The first coil holder 65 iscoupled with the second coil holder 75.

The movable body 3 includes multiple yokes (first yoke 64, second yoke74, and third yoke 84) disposed on the first coil 61 on the first sideZ1 in the first direction Z, between the first coil 61 and the secondcoil 71, and on the second coil 71 on the second side Z2 in the firstdirection Z. The first magnets 621 and 622 and the second magnets 721and 722 are respectively held by the yokes. In this embodiment, theyokes include a first yoke 64 disposed adjacent to the first side Z1 ofthe first coil 61 in the first direction Z, a second yoke 74 disposedadjacent to the second side Z2 of the second coil 71 in the firstdirection Z, and a third yoke 84 disposed between the first coil 61 andthe second coil 71. The face of the first yoke 64 adjacent to the firstcoil 61 holds the first magnet 621, and the face of the third yoke 84adjacent to the first coil 61 holds the first magnet 622. The face ofthe second yoke 74 adjacent to the second coil 72 holds the secondmagnet 721, and the face of the third yoke 84 adjacent to the secondcoil 71 holds the second magnet 722.

(Detailed Configuration of First Magnetic Drive Circuit 6)

FIG. 5 is an exploded perspective view of the drive circuits of theactuator 1 viewed from the second side Z2 in the first direction Z inFIG. 1. FIG. 6 is an exploded perspective view of the drive circuits ofthe actuator 1 viewed from the first side Z1 in the first direction Z inFIG. 1. FIG. 7 is an exploded perspective view of the first magneticdrive circuit 6 illustrated in FIG. 2 and FIG. 3.

With reference to FIG. 2, FIG. 3, FIG. 5, FIG. 6, and FIG. 7, the firstcoil holder 65 includes a first frame 66 holding the first coil 61therein, a first reinforcement frame 67 disposed adjacent to the firstside Z1 of the first frame 66 in the first direction Z, and multiplefirst columns 69 connecting the edges of the first frame 66 andcorresponding edges of the first reinforcement frame 67. In thisembodiment, the first frame 66 and the first reinforcement frame 67 eachhave a quadrangular external shape viewed from the first direction Z.The first columns 69 are disposed at the four corners of the quadrangle.The first columns 69 protrude from the first frame 66 toward the secondcoil holder 75. The first coil holder 65 is composed of resin or metal.The first coil holder 65 according to this embodiment is composed ofresin.

The first coil 61 of the first magnetic drive circuit 6 is an ellipticalcoreless coil having first effective side portions 611 and 612 (longside portions) extending in the third direction Y. The first frame 66 ofthe first coil holder 65, which corresponds to this shape, has anelliptical first opening 660 having a major axis along the thirddirection Y. The first coil 61 is fixed inside the first opening 660with an adhesive agent or any other means.

First seats 661 and 662 are disposed on the first frame 66 of the firstcoil holder 65 on the first side Z1 in the first direction Z atpositions overlapping the two edges of the first opening 660 in thethird direction Y. The first seats 661 and 662 support, on the firstside Z1 in the first direction Z, first ineffective portions 613 and614, respectively, (short side portions) disposed at the two edges ofthe first coil 61 and extending along the second direction X. The firstseats 661 and 662 protrude from the first frame 66 to the first side Z1in the first direction Z and constitute bottom portions of the firstopening 660 on the first side Z1 in the first direction Z at the twoedges in the third direction Y. The face of the first frame 66 on thesecond side Z2 in the first direction Z has a cutout 665 adjacent to thefirst opening 660 on the first side Y1 of in the third direction Y. Thecutout 665 is a guide through which the leading end of the wire of thefirst coil 61 and the trailing end of the wire of the first coil 61 arepassed. The thickness of the first frame 66 (in the first direction Z)is larger than the thickness of the first coil 61 (in the firstdirection Z). Thus, the first coil 61 does not protrude from the firstframe 66 on the second side Z2 in the first direction Z while the firstcoil 61 is disposed inside the first opening 660. The external face ofthe first frame 66 of the first coil holder 65 is provided with aprotrusion 666 protruding from the first side Y1 in the third directionY.

The first magnets 621 and 622 each have a rectangular plan view. Thelong sides of the first magnets 621 and 622 extend along the seconddirection X, and the short sides extend along the third direction Y. Thefirst magnets 621 and 622 are magnetically polarized in the seconddirection X. The N and S poles of the magnets oppose the first effectiveside portions 611 and 612, respectively, of the first coil 61. Thus,when the first coil 61 is energized, the first magnetic drive circuit 6generates a driving force that drives the movable body 3 in the seconddirection X.

The third yoke 84 of the first magnetic drive circuit 6 has a planarshape and a flat portion 840 having a face on the first side Z1 in thefirst direction Z holding the first magnet 622. The first yoke 64 has aflat magnet holding portion 640 having a face on the second side Z2 inthe first direction Z holding the magnet 621, and two first couplers 641and 642 bent from the two edges of the magnet holding portion 640 in thesecond direction X toward the second side Z2 in the first direction Z.The first couplers 641 and 642 are each coupled with the third yoke 84.The edges of the first couplers 641 and 642 on the second side Z2 in thefirst direction Z have cutouts 641 a and 642 a, respectively. The edgeof the flat portion 840 of the third yoke 84 on the first side X1 andthe second side X2 in the second direction X have projections 841 and842, respectively, that fit to the cutouts 641 a and 642 a,respectively. In this embodiment, the first couplers 641 and 642 of thefirst yoke 64 and the third yoke 84 are coupled by welding or swaging.

The first yoke 64 has flat portions 643 and 644 protruding from the twoedges of the magnet holding portion 640 in the third direction Y towardthe first side Y1 and the second side Y2, respectively, in the thirddirection Y. The flat portions 643 and 644 have through-holes 643 a and644 a, respectively.

In the first magnetic drive circuit 6 having such a configuration, themagnet holding portion 640 of the first yoke 64 adjacent to the secondcoil 71 and the first magnet 621 are disposed between the first frame 66and the first reinforcement frame 67 of the first coil holder 65 alongthe first direction Z. The first couplers 641 and 642 protrude frombetween the first frame 66 and the first reinforcement frame 67 towardthe third yoke 84. In this embodiment, the first yoke 64 is disposed inthe space between the first frame 66 and the first reinforcement frame67 of the first coil holder 65. Thus, the actuator 1 can have reduceddimensions.

(Configuration of Second Magnetic Drive Circuit 7)

FIG. 8 is an exploded perspective view of the second magnetic drivecircuit 7 illustrated in FIG. 2 and FIG. 3. With reference to FIG. 2,FIG. 3, FIG. 5, FIG. 6, and FIG. 8, the second coil holder 75 includes asecond frame 76 holding the second coil 71 therein, a secondreinforcement frame 77 disposed adjacent to the second frame 76 on thesecond side Z2 in the first direction Z, and multiple second columns 79connecting the edges of the second frame 76 and edges of the secondreinforcement frame 77. In this embodiment, the second frame 76 and thesecond reinforcement frame 77 viewed along the first direction Z eachhave a quadrangular external shape. The second columns 79 are disposedat the four corners of the quadrangle. The second columns 79 protrudefrom the second frame 76 toward the first coil holder 65. The end facesof the second columns 79 are in contact with the end faces of thecorresponding first columns 69 of the first coil holder 65. Thus, thefirst coil holder 65 and the second coil holder 75 (the first coil 61and the second coil 71) can be disposed apart from each other by anappropriate distance. The second coil holder 75 is composed of resin ormetal. The second coil holder 75 according to this embodiment iscomposed of resin.

The second coil 71 of the second magnetic drive circuit 7 is anelliptical coreless coil having second effective side portions 711 and712 (long side portions) extending along the second direction X. Thesecond frame 76 of the second coil holder 75, which corresponds to thisshape, has an elliptical second opening 760 having a major axis alongthe second direction X. The second coil 71 is fixed inside the secondopening 760 with an adhesive agent or any other means.

Second seats 761 and 762 are disposed on the second frame 76 of thesecond coil holder 75 on the second side Z2 in the first direction Z atpositions overlapping the two edges of the second opening 760 in thesecond direction X. The second seats 761 and 762 support, on the secondside Z2 in the first direction Z, second ineffective portions 713 and714, respectively, (short side portions) disposed at the two edges ofthe second coil 71 and extending along the third direction Y. The secondseats 761 and 762 protrude from the second frame 76 to the second sideZ2 in the first direction Z and constitute bottom portions of the secondopening 760 on the second side Z2 in the first direction Z at the twoedges in the second direction X. The face of the second frame 76 on thefirst side Z1 in the first direction Z has a cutout 765 adjacent to ofthe second opening 760 on the first side X1 in the second direction X.The cutout 765 is a guide through which the leading and the trailingends of the wire of the second coil 71 are passed. The thickness of thesecond frame 76 (in the first direction Z) is larger than the thicknessof the second coil 71 (in the first direction Z). Thus, the second coil71 does not protrude from the second frame 76 on the first side Z1 inthe first direction Z while the second coil 71 is a disposed inside thesecond opening 760. The external face of the second frame 76 of thesecond coil holder 75 is provided with a protrusion 766 protruding fromthe first side X1 in the second direction X.

The second magnets 721 and 722 each have a rectangular plan view. Thelong sides of the second magnets 721 and 722 extend along the thirddirection Y, and the short sides extend along the second direction X.The second magnets 721 and 722 are magnetically polarized in a directionalong the third direction Y. The N and S poles of the magnets oppose thesecond effective side portions 711 and 712, respectively, of the secondcoil 71. Thus, when the second coil 71 is energized, the second magneticdrive circuit 7 generates a driving force that drives the movable body 3in the third direction Y.

The third yoke 84 is shared between the second magnetic drive circuit 7and the first magnetic drive circuit 6 and has the flat portion 840having a face on the second side Z2 in the first direction Z holding thesecond magnet 722. Hence, the yokes are disposed adjacent to the twosides of the first coil 61 in the first direction Z and the two sides ofthe second coil 71 in the first direction Z, and one of the yokes (thirdyoke 84) is disposed between the first coil 61 and the second coil 71.This can suppress an increase in the thickness (length in the firstdirection Z) of the actuator 1.

The third yoke 84 has a thickness in the first direction Z larger thanthat of the other yokes (the first yoke 64 and the second yoke 74).Thus, even when the third yoke 84 is shared between the first magneticdrive circuit 6 and the second magnetic drive circuit 7, magneticsaturation does not readily occur.

The second yoke 74 has a flat magnet holding portion 740 that holds thesecond magnet 721 on the face on the first side Z1 in the firstdirection Z and two second couplers 741 and 742 that are platelikeportions bent from the two edges of the holding portion 740 in the thirddirection Y toward the first side Z1 in the first direction Z. Thesecond couplers 741 and 742 are each coupled with the third yoke 84. Theedges of the second couplers 741 and 742 on the first side Z1 in thefirst direction Z have cutouts 741 a and 742 a, respectively. The edgeof the flat portion 840 of the third yoke 84 on the first side Y1 andthe second side Y2 in the third direction Y have projections 841 and842, respectively, that fit to the cutouts 741 a and 742 a,respectively. In this embodiment, the second couplers 741 and 742 of thesecond yoke 74 and the third yoke 84 are coupled by welding or swaging.

The second yoke 74 has flat portions 743 and 744 protruding from the twoedges of the magnet holding portion 740 in the second direction X towardthe first side X1 and second side X2 in the second direction X. The flatportions 743 and 744 have through-holes 743 a and 744 a, respectively.

In the second magnetic drive circuit 7 having such a configuration, themagnet holding portion 740 of the second yoke 74 facing the second coil72 and the second magnet 721 are disposed between the second frame 76and the second reinforcement frame 77 of the second coil holder 75 alongthe first direction Z. The second couplers 741 and 742 protrude frombetween the second frame 76 and the second reinforcement frame 77 towardthe third yoke 84. In this embodiment, the second yoke 74 is disposed inthe space between the second frame 76 and the second reinforcement frame77 of the second coil holder 75. Thus, the actuator 1 can have reduceddimensions.

The first yoke 64 and the second yoke 74 coupled with the third yoke 84serve as an assembly of multiple yokes (the first yoke 64, the secondyoke 74, and the third yoke 84) for the movable body 3. The first yoke64 and the third yoke 84 are coupled through the first couplers acrossthe two edges of the first coil 61 in the second direction X. The firstcouplers 641 and 642 are disposed along the extending direction (seconddirection) of the ineffective side portions of the first coil 61. Thesecond yoke 74 and the third yoke 84 are coupled through the secondcouplers across the two edges of second coil 71 in the third directionY. The second couplers 741 and 742 are disposed along the extendingdirection (third direction) of the ineffective side portions of thesecond coil 71. Thus, the first couplers and the second couplers can bedisposed in gaps, thereby reducing the dimensions of the actuator.

(Coupled Structure of First Coil Holder 65 and Second Coil Holder 75)

With reference to FIG. 5 and FIG. 6, the first coil holder 65 and thesecond coil holder 75 have multiple bottomed holes 690 and 790,respectively, on faces adjacent to each other in the first direction Z.The first coil holder 65 and the second coil holder 75 are positionedwith pins fitting in the holes 690 and 790. In this embodiment, the endfaces of the first columns 69 of the first coil holder 65 are in contactwith the end faces of the respective second columns 79 of the secondcoil holder 75. Thus, among the first columns 69 and the second columns79, at least two pairs of the first columns 69 and the second columns 79in contact with each other have the holes 690 and 790, respectively. Inthis embodiment, three pairs of the first columns 69 and the secondcolumns 79, excluding the first column 69 and the second column 79disposed on the first side X1 in the second direction X and the firstside Y1 in the third direction Y, has the holes 690 and 790,respectively, among four of the first columns 69 of the first coilholder 65 and four of the second columns 79 of the second coil holder75. The holes 690 and 790 receive pins 20. In this embodiment, the pins20 are round metal bars.

According to this embodiment, the connection between the first coilholder 65 and the second coil holder 75 can have enhanced strengthagainst shock applied in a direction orthogonal to the first directionZ. Moreover, according to this embodiment, formation of the holes 690 inthe first columns 69 of the first coil holder 65 and the holes 790 inthe second columns 79 of the second coil holder 75 allows the holes 690and 790 to have a large depth. This can enhance the strength of theconnection between the first coil holder 65 and the second coil holder75.

The pins 20 may be simply fit to the holes 690 and 790 or may be bondedto the inner faces of the holes 690 and 790. The ends of the firstcolumns 69 and the ends of the second columns 79 may simply be disposedin contact with each other or may be bonded to each other. In eithercase, the first coil holder 65 and the second coil holder 75 are alignedin the first direction Z and are restrained by the restraining member 27from the two sides in the first direction Z.

(Detailed Configuration of Restraining member 27 and Elastic Members 4)

With reference to FIG. 4, the restraining member 27 includes a firstsheetlike part 28 having a first end flat portion 281 adjacent to thefirst side Z1 of the first coil holder 65 in the first direction Z and asecond sheetlike part 29 having a second end flat portion 291 adjacentto the second side Z2 of the second coil holder 75 in the firstdirection Z. The first end flat portion 281 has two through-holes 286and 287 disposed apart from each other along the third direction Y andtwo through-holes 288 and 289 disposed apart from each other along thesecond direction X. The through-holes 286 and 287 align respectivelywith the through-holes 643 a and 644 a in the first yoke 64. The secondend flat portion 291 has two through-holes 296 and 297 disposed apartfrom each other along the second direction X and two through-holes 298and 299 disposed apart from each other along the third direction Y. Thethrough-holes 296 and 297 align respectively with the through-holes 743a and 744 a in the second yoke 74. In this embodiment, the firstsheetlike part 28 and the second sheetlike part 29 are composed of metalplates.

The first sheetlike part 28 has two first side plate portions 282 thatbend from the two edges of the first end flat portion 281 in the thirddirection Y toward the second side Z2 (the side adjacent to the secondelastic member 42) in the first direction Z. The first side plateportions 282 are joined to the second end flat portion 291 of the secondsheetlike part 29 by welding or any other means. The second sheetlikepart 29 has two second side plate portions 292 that bend from the twoedges of the second end flat portion 291 in the second direction Xtoward the first side Z1 (the side adjacent to the first elastic member41) in the first direction Z. The second side plate portions 292 arejoined to the first end flat portion 281 of the first sheetlike part 28by welding or any other means.

In this state, the first coil holder 65 and the second coil holder 75are aligned with in the first direction Z, and the restraining member 27restrains the first coil holder 65 and the second coil holder 75 bypressing the two sides in the first direction Z. Since the first endflat portion 281 is adjacent to the first yoke 64 of the movable body 3in the first direction Z, the first elastic member 41 is disposedbetween the first end flat portion 281 and the first yoke 64 while beingcompressed in the first direction Z. Since the second end flat portion291 is adjacent to the second yoke 74 of the movable body 3 in the firstdirection Z, the second elastic member 42 is disposed between the secondend flat portion 291 and the second yoke 74 while being compressed inthe first direction Z.

According to this embodiment, the multiple components (the first coilholder 65 and the second coil holder 75) of the supporting body 2 arealigned with in the first direction Z and restrained from the two sidesin the first direction Z by the restraining member 27. This stabilizesthe dimension of the supporting body 2 in the first direction Z. Thefirst elastic member 41 and the second elastic member 42 are disposedbetween the restraining member 27 and the movable body 3. Thisstabilizes the dimensions of the first elastic member 41 and the secondelastic member 42 in the first direction Z. Thus, the first elasticmember 41 and the second elastic member 42 are positioned in anappropriate state. Since the first elastic member 41 and the secondelastic member 42 are disposed while being compressed in the firstdirection Z, the first elastic member 41 and the second elastic member42 can be certainly disposed in contact with both the movable body 3 andthe restraining member 27.

In this embodiment, the two faces of the first elastic member 41 may bedisposed in contact with the first end flat portion 281 and the firstyoke 64 while being fixed to the first end flat portion 281 and thefirst yoke 64 with an adhesive agent or may be disposed in contact withthe first end flat portion 281 and the first yoke 64 without using anadhesive agent. Similar to the first elastic member 41, the two faces ofthe second elastic member 42 may be disposed in contact with the secondend flat portion 291 and the second yoke 74 while being fixed to thesecond end flat portion 291 and the second yoke 74 with an adhesiveagent or may be disposed in contact with the second end flat portion 291and the second yoke 74 without using an adhesive agent.

(Configuration of Flexible Wiring Board 9)

With reference to FIG. 1 and FIG. 2, the flexible wiring board 9 isfixed to the movable body 3. The flexible wiring board 9 according tothis embodiment includes a first portion 91 disposed closer to the firstside Y1 of the third direction Y than the first coil 61 and the secondcoil 71 illustrated in FIG. 7 and FIG. 8, a bent portion 90 bent fromthe first portion 91 toward the second side Y2 in the third direction Y,and a second portion 92 extending from the bent portion 90 and disposedcloser to the first side X1 in the second direction X than the firstcoil 61 and the second coil 71. One of the first portion 91 and thesecond portion 92 is provided with first terminals 96 connected to thewire of the first coil 61, and the other one of the first portion 91 andthe second portion 92 is provided with second terminals 97 connected tothe wire of the second coil 71. The second portion 92 is provided withmultiple third terminals 98 for connection with external units.

In this embodiment, the end of the wire of the first coil 61 illustratedin FIG. 7 is routed through the cutout 665 in the first coil holder 65toward the first side Y1 in the third direction Y along which the firsteffective side portions 611 and 612 extend. The end of the wire of thesecond coil 71 illustrated in FIG. 8 is routed through the cutout 765 inthe second coil holder 75 toward the first side X1 in the seconddirection X along which the second effective side portions 711 and 712extend. Thus, in this embodiment, the first portion 91 is provided withthe first terminals 96, and the second portion 92 is provided with thesecond terminals 97.

The first portion 91 is a strip disposed on the adjacent to the firstcoil 61 on the first side Y1 in the third direction Y and extending inthe second direction X. The first portion 91 is provided with multiplefirst terminals 96 extending in the second direction X. The firstportion 91 is provided with a hole 916 receiving the protrusion 666 ofthe first coil holder 65.

The second portion 92 includes a third portion 93 extending from thebent portion 90 to the second side Z2 of the first direction Z and afourth portion 94 that is a strip extending from the third portion 93,disposed adjacent to the second coil 71 on the first side X1 in thesecond direction X, and extending in the third direction Y. The fourthportion 94 is provided with multiple second terminals 97 extending alongthe third direction Y.

In the flexible wiring board 9, the first portion 91 is fixed to theexternal face of the first coil holder 65 with an adhesive agent or anyother means, and the fourth portion 94 is fixed to the external face ofthe second coil holder 75 with an adhesive agent or any other means. Thethird portion 93 is fixed across the external face of the correspondingfirst column 69 of the first coil holder 65 and the external face of thecorresponding second column 79 of the second coil holder 75. Thus, theactuator 1 does not require a separate component for fixing the flexiblewiring board 9.

The third terminals 98 are arrayed along the first direction Z in thethird portion 93 and are exposed on the restraining member 27. Thus,flexible wiring boards and wiring components for power feeding, such aslead wires, can be connected to the third terminals 98.

The fourth portion 94 is provided with a hole 946 receiving theprotrusion 766 of the second coil holder 75. One of the holes 916 and946 has a circular shape and the other has an elliptical shape. Thus,the position of the flexible wiring board 9 is adjustable in theextending direction (the second direction X or the third direction Y) ofthe flexible wiring board 9 by the length of the ellipse. In thisembodiment, the hole 916 has an elliptical shape, and the hole 946 has acircular shape.

(Positional Relation of Magnetic Centers of Magnetic Drive Circuits andCenter of Gravity of Movable Body 3)

In an actuator 1 having such a configuration, the first coil 61, thesecond coil 71, the first coil holder 65, and the second coil holder 75are disposed axisymmetrically about an imaginary central line extendingalong the third direction Y while intersecting the center of the movablebody 3 on the second direction X and axisymmetrically about an imaginarycentral line extending along the second direction X while intersectingthe center of the movable body 3 on the third direction Y. The firstmagnets 621 and 622, the second magnets 721 and 722, the first yoke 64,and the second yoke 74 are disposed axisymmetrically about an imaginarycentral line extending along the third direction Y while intersectingthe center of the movable body 3 on the second direction X andaxisymmetrically about an imaginary central line extending along thesecond direction X while intersecting the center of the movable body 3on the third direction Y.

Thus, the magnetic center (drive center) of the first magnetic drivecircuit 6 exactly or substantially matches the center of gravity of themovable body 3 in the second direction X and the third direction Y. Themagnetic center (drive center) of the second magnetic drive circuit 7exactly or substantially matches the center of gravity of the movablebody 3 in the second direction X and the third direction Y.

(Basic Operation)

In the actuator 1 according to this embodiment, feeding an alternatingcurrent to the first coil 61 while cutting off the current from thesecond coil 71 causes the movable body 3 to vibrate in the seconddirection X. This causes the center of gravity of the actuator 1 toshift in the second direction X. Thus, the user can sense the vibrationin the second direction X. At this time, the waveform of the alternatingcurrent applied to the first coil 61 can be adjusted to cause adifference between the acceleration of the movable body 3 toward thefirst side X1 in the second direction X and the acceleration of themovable body 3 toward the second side X2 in the second direction X. Thisallows the user to sense vibration having directionality along thesecond direction X. An alternating current is applied to the second coil71, while the current to the first coil 61 is cutoff. This causes themovable body 3 to vibrate in direction along the third direction Y,thereby causing the center of gravity of the actuator 1 to shift alongthe third direction Y. Thus, the user can sense the vibration in thethird direction Y. At this time, the waveform of the alternating currentapplied to the second coil 71 can be adjusted to cause a differencebetween the acceleration of the movable body 3 toward the first side Y1in the third direction Y and the acceleration of the movable body 3toward second side Y2 in the third direction Y. This allows the user tosense vibration having directionality along the third direction Y.

By feeding an electrical current to both the first coil 61 and thesecond coil 71, the user can sense a combination of vibration in thesecond direction X and vibration in the third direction Y.

(Stopper Mechanism)

The actuator 1 according to this embodiment includes a stoppermechanism, such as that illustrated in FIG. 2 and FIG. 3, to prevent themovable body 3 from coming into contact with the supporting body 2 inareas having low strength when the movable body 3 shifts extensivelyrelative to the supporting body 2. In detail, as illustrated in FIG. 3,a first seat 681 of the first coil holder 65 is disposed at a positionat a predetermined distance from the first side Y1 of the first magnet621 along the third direction Y, and a first seat 682 of the first coilholder 65 is disposed at a position at a predetermined distance from thesecond side Y2 of the first magnet 621 along the third direction Y.Thus, the movable range of the movable body 3 when the movable body 3 isdriven along the third direction Y by the second magnetic drive circuit7 is restricted by a first stopper mechanism including the first magnet621 of the first magnetic drive circuit 6 and first seats 681 and 682(first stoppers 683 and 684) of the first coil holder 65.

As illustrated in FIG. 2, a second seat 781 of the second coil holder 75is disposed at a position at a predetermined distance from the firstside X1 of the second magnet 721 of the second magnetic drive circuit 7along the second direction X, and a second seat 782 of the second coilholder 75 is disposed at a position at a predetermined distance from thesecond side X2 of the second magnet 721 along the second direction X.Thus, the movable range of the movable body 3 when the movable body 3 isdriven along the second direction X by the first magnetic drive circuit6 is restricted by a second stopper mechanism including the secondmagnet 721 of the second magnetic drive circuit 7 and second seats 781and 782 (second stoppers 783 and 784) of the second coil holder 75.

In this way, the first stopper mechanism includes the first seats 681and 682 of the first coil holder 65 supporting the first coil 61, andthe second stopper mechanism includes the second seats 781 and 782 ofthe second coil holder 75 supporting the second coil 71. Thus,protrusions (stopper) besides the first seats 681 and 682 and the secondseats 781 and 782 need not to be provided on the first coil holder 65and the second coil holder 75. Thus, the first coil holder 65 and thesecond coil holder 75 can have simple configurations.

(Method of Producing Actuator 1)

FIG. 9 illustrates a jig 100 used in production of the actuator 1according to at least an embodiment of the present invention. FIG. 10illustrates the first sheetlike part 28 of the restraining member 27positioned with the jig 100 illustrated in FIG. 9. FIG. 11 illustratesthe first yoke 64 of the first sheetlike part 28 positioned with the jig100 illustrated in FIG. 9.

Before producing the actuator 1, a jig 100 is prepared having multiplefirst positioning pins 110 protruding from the sheetlike support 150 inthe first direction Z and multiple second positioning pins 120protruding from the support 150 farther in the first direction Z thanthe first positioning pins 110, as illustrated in FIG. 9. In thisembodiment, the jig 100 includes two first positioning pins 110 disposedapart from each other along the second direction X and two secondpositioning pins 120 disposed apart from each other along the thirddirection Y.

The second positioning pins 120 each have a thick portion 121 protrudingfrom the support 150 in the first direction Z and a thin portion 122having an outer diameter smaller than that of the thick portion 121 andprotruding from the end of the thick portion 121.

A total of four through-holes 286, 287, 288, and 289 (firstthrough-holes) are formed in the first end flat portion 281 of the firstsheetlike part 28 of the restraining member 27 disposed at the fartheston the first side Z1 in the first direction Z on the supporting body 2.Among the four through-holes 286, 287, 288, and 289, the inner diameterof the two through-holes 288 and 289 disposed apart along the seconddirection X is slightly larger than the outer diameter of each of thefirst positioning pins 110, and the inner diameter of the twothrough-holes 286 and 287 disposed apart along the third direction Y isslightly larger than the outer diameter of the thick portion 121 of eachof the second positioning pins 120.

Two through-holes 643 a and 644 a (second through-holes) disposed apartfrom each other along the third direction Y are formed in the first yoke64 disposed on the farthest in the first direction Z on the first sideZ1 of the movable body 3. The inner diameter of the through-holes 643 aand 644 a is slightly larger than the outer diameter of the thin portion122 of each of the second positioning pins 120 and smaller than theouter diameter of the thick portion 121. The first magnet 621 is fixedto the first yoke 64.

In the first step of assembling the actuator 1 with the jig 100, thefirst positioning pins 110 are passed through the through-holes 288 and289 in the first sheetlike part 28, and the second positioning pins 120are passed through the through-holes 286 and 287, as illustrated in FIG.10. As a result, the first sheetlike part 28 is positioned in contactwith the jig 100.

The first elastic member 41 is disposed on the first end flat portion281 of the first sheetlike part 28, and then, the second positioningpins 120 are passed through the through-holes 643 a and 644 a in thefirst yoke 64. As a result, the first positioning pins 110 arepositioned in contact with the first yoke 64. A stepped portion 123disposed between the thick portion 121 and the thin portion 122 of eachof the second positioning pins 120 comes into contact with the firstyoke 64, and the thin portion 122 protrudes from the first yoke 64.

The supporting body 2 and the movable body 3 are assembled on the basisof the first sheetlike part 28 and the first yoke 64. According to thismethod, the first sheetlike part 28 and the first yoke 64 areappropriately positioned in the second direction X, the third directionY, and the first direction Z. This appropriately positions thecomponents of the actuator 1 in the second direction X, the thirddirection Y, and the first direction Z after assembly of the supportingbody 2 and the movable body 3 on the basis of the first sheetlike part28 and the first yoke 64.

Other Embodiments

In the embodiment described above, the elastic members 4 are gelatinousdampers. Alternatively, the elastic members 4 may be composed of rubberor springs.

In the embodiment described above, the first yoke 64, the first magnet621, the first coil 61, the first magnet 622, the third yoke 84, thesecond magnet 721, the second coil 71, the second magnet 722, and thesecond yoke 74 are disposed in this order from the first side Z1 to thesecond side Z2 in the first direction Z. Alternatively, at least anembodiment of the present invention may be applied to a configuration inwhich the first magnetic drive circuit 6 and the second magnetic drivecircuit 7 are each provided with one magnet. For example, at least anembodiment of the present invention may be applied to an actuator 1including the first yoke 64, the first coil 61, the first magnet 622,the third yoke 84, the second magnet 721, the second coil 71, and thesecond yoke 74, in this order. Alternatively, at least an embodiment ofthe present invention may be applied to an actuator 1 including thefirst yoke 64, the first magnet 621, the first coil 61, the third yoke84, the second coil 71, the second magnet 722, and the second yoke 74,in this order.

In the embodiment described above, the coils and the coil holders aredisposed on the supporting body 2, and the magnets and the yokes aredisposed on the movable body 3. Alternatively, the coils and the coilholders may be disposed on the movable body 3, and the magnets and theyokes may be disposed on the supporting body 2.

While the description above refers to particular embodiments of thepresent invention, it will be understood that many modifications may bemade without departing from the spirit thereof. The accompanying claimsare intended to cover such modifications as would fall within the truescope and spirit of the present invention.

The presently disclosed embodiments are therefore to be considered inall respects as illustrative and not restrictive, the scope of theinvention being indicated by the appended claims, rather than theforegoing description, and all changes which come within the meaning andrange of equivalency of the claims are therefore intended to be embracedtherein.

What is claimed is:
 1. An actuator comprising: a supporting body; amovable body shiftable relative to the supporting body; a first magneticdrive circuit comprising a first coil and a first magnet adjacent toeach other in a first direction and structured to drive the movable bodyin a second direction orthogonal to the first direction; a secondmagnetic drive circuit comprising a second coil and a second magnetadjacent to each other in the first direction and structured to drivethe movable body in a third direction orthogonal to the first directionand intersecting the second direction, the second coil and the secondmagnet being aligned with the first magnetic drive circuit in the firstdirection; a first coil holder supporting the first coil; and a secondcoil holder holding the second coil and aligned with the first coilholder in the first direction, wherein, the first coil holder and thesecond coil holder each comprises a plurality of bottomed holes havingopenings in regions where the first coil holder and the second coilholder are disposed adjacent to each other in the first direction, thefirst coil holder and the second coil holder are positioned with pinsfit to the holes.
 2. The actuator according to claim 1, wherein, thefirst coil holder comprises a plurality of first columns protrudingtoward the second coil holder, the second coil holder comprises aplurality of second columns protruding toward the respective firstcolumns such that end faces of the second columns come into contact withend surfaces of the respective first columns, and among the firstcolumns and the second columns, the holes are formed in at least two ofthe first columns and at least of two the second columns in contact witheach other.
 3. The actuator according to claim 2, wherein, the firstcoil holder comprises a first frame holding the first coil inside thefirst frame, the second coil holder comprises a second frame holding thesecond coil inside the second frame, the first columns are disposed atedge portions of the first frame, and the second columns are disposed atedge portions of the second frame.
 4. The actuator according to claim 3,wherein, the first frame and the second frame each has a quadrangularshape, the plurality of first columns comprises four first columnsdisposed at the four corners of the first frame, and the plurality ofsecond columns comprise four second columns disposed at the four cornersof the second frame.
 5. The actuator according to claim 4, wherein thepins comprise metal.
 6. The actuator according to claim 5, wherein, thefirst magnet is disposed adjacent to a first effective side portion inthe first direction, the first effective side portion being disposed onthe first coil and extending in the third direction, the second magnetis disposed adjacent to a second effective side portion in the firstdirection, the second effective side portion being disposed on thesecond coil and extending in the second direction, the first coil holdercomprises a first stopper disposed adjacent to the first magnet in thethird direction and defining a first movable range of the movable bodyin the third direction, and the second coil holder comprises a secondstopper disposed adjacent to the second magnet in the second directionand defining a second movable range of the movable body in the seconddirection.
 7. The actuator according to claim 6, wherein, the first coiland the second coil are disposed on the supporting body, and the firstmagnet and the second magnet are disposed on the movable body.
 8. Theactuator according to claim 7 wherein, a first elastic member havingelasticity or viscoelasticity is disposed in contact with both themovable body and the supporting body, the first elastic member beingdisposed between the movable body and a portion of the supporting bodyadjacent to a side of the first coil on the movable body, the side ofthe first coil being remote from the second coil, and a second elasticmember having elasticity or viscoelasticity is disposed in contact withboth the movable body and the supporting body, the second elastic memberbeing disposed between the movable body and a portion of the supportingbody adjacent to a side of the second coil on the movable body, the sideof the second coil being remote from the first coil.
 9. The actuatoraccording to claim 5, wherein, the first coil and the second coil aredisposed on the supporting body, and the first magnet and the secondmagnet are disposed on the movable body.
 10. The actuator according toclaim 5, wherein, a first elastic member having elasticity orviscoelasticity is disposed in contact with both the movable body andthe supporting body, the first elastic member being disposed between themovable body and a portion of the supporting body adjacent to a side ofthe first coil on the movable body, the side of the first coil beingremote from the second coil, and a second elastic member havingelasticity or viscoelasticity is disposed in contact with both themovable body and the supporting body, the second elastic member beingdisposed between the movable body and a portion of the supporting bodyadjacent to a side of the second coil on the movable body, the side ofthe second coil being remote from the first coil.
 11. The actuatoraccording to claim 1, wherein the pins comprise metal.
 12. The actuatoraccording to claim 1, wherein, the first magnet is disposed adjacent toa first effective side portion in the first direction, the firsteffective side portion being disposed on the first coil and extending inthe third direction, the second magnet is disposed adjacent to a secondeffective side portion in the first direction, the second effective sideportion being disposed on the second coil and extending in the seconddirection, the first coil holder comprises a first stopper beingdisposed adjacent to the first magnet in the third direction anddefining a first movable range of the movable body in the thirddirection, and the second coil holder comprises a second stopperdisposed adjacent to the second magnet in the second direction anddefining a second movable range of the movable body in the seconddirection.
 13. The actuator according to claim 1, wherein, the firstcoil and the second coil are disposed on the supporting body, and thefirst magnet and the second magnet are disposed on the movable body. 14.The actuator according to claim 1, wherein, a first elastic memberhaving elasticity or viscoelasticity is disposed in contact with boththe movable body and the supporting body, the first elastic member beingdisposed between the movable body and a portion of the supporting bodyadjacent to a side of the first coil on the movable body, the side ofthe first coil being remote from the second coil, and a second elasticmember having elasticity or viscoelasticity is disposed in contact withboth the movable body and the supporting body, the second elastic memberbeing disposed between the movable body and a portion of the supportingbody adjacent to a side of the second coil on the movable body, the sideof the second coil being remote from the first coil.
 15. The actuatoraccording to claim 12, wherein, the first coil and the second coil aredisposed on the supporting body, and the first magnet and the secondmagnet are disposed on the movable body.
 16. The actuator according toclaim 12, wherein, a first elastic member having elasticity orviscoelasticity is disposed in contact with both the movable body andthe supporting body, the first elastic member being disposed between themovable body and a portion of the supporting body adjacent to a side ofthe first coil on the movable body, the side of the first coil beingremote from the second coil, and a second elastic member havingelasticity or viscoelasticity is disposed in contact with both themovable body and the supporting body, the second elastic member beingdisposed between the movable body and a portion of the supporting bodyadjacent to a side of the second coil on the movable body, the side ofthe second coil being remote from the first coil.
 17. The actuatoraccording to claim 4, wherein the first magnet is disposed adjacent to afirst effective side portion in the first direction, the first effectiveside portion being disposed on the first coil and extending in the thirddirection, the second magnet is disposed adjacent to a second effectiveside portion in the first direction, the second effective side portionbeing disposed on the second coil and extending in the second direction,the first coil holder comprises a first stopper disposed adjacent to thefirst magnet in the third direction and defining a first movable rangeof the movable body in the third direction, and the second coil holdercomprises a second stopper disposed adjacent to the second magnet in thesecond direction and defining a second movable range of the movable bodyin the second direction.
 18. The actuator according to claim 17,wherein, the first coil and the second coil are disposed on thesupporting body, and the first magnet and the second magnet are disposedon the movable body.
 19. The actuator according to claim 17, wherein afirst elastic member having elasticity or viscoelasticity is disposed incontact with both the movable body and the supporting body, the firstelastic member being disposed between the movable body and a portion ofthe supporting body adjacent to a side of the first coil on the movablebody, the side of the first coil being remote from the second coil, anda second elastic member having elasticity or viscoelasticity is disposedin contact with both the movable body and the supporting body, thesecond elastic member being disposed between the movable body and aportion of the supporting body adjacent to a side of the second coil onthe movable body, the side of the second coil being remote from thefirst coil.
 20. The actuator according to claim 4, wherein, a firstelastic member having elasticity or viscoelasticity is disposed incontact with both the movable body and the supporting body, the firstelastic member being disposed between the movable body and a portion ofthe supporting body adjacent to a side of the first coil on the movablebody, the side of the first coil being remote from the second coil, anda second elastic member having elasticity or viscoelasticity is disposedin contact with both the movable body and the supporting body, thesecond elastic member being disposed between the movable body and aportion of the supporting body adjacent to a side of the second coil onthe movable body, the side of the second coil being remote from thefirst coil.